Hi,
On Friday, 27 January 2006 05:04, Nigel Cunningham wrote:
> On Friday 27 January 2006 09:10, Rafael J. Wysocki wrote:
> > On Thursday, 26 January 2006 04:45, Nigel Cunningham wrote:
> > > Hi everyone.
> > >
> > > This set of patches represents the freezer upgrade patches from Suspend2.
> > >
> > > The key features of this changeset are:
> > >
> > > - Use of Christoph Lameter's todo list notifiers, which help with SMP
> > > cleanness.
> > > - Splitting the freezing of kernel and userspace processes. Freezing
> > > currently suffers from a race because userspace processes can be
> > > submitting work for kernel threads, thereby stopping them from
> > > responding to freeze messages in a timely manner. The freezer can
> > > thus give up when it doesn't really need to. (This is not normally
> > > a problem only because load is not usually high).
> >
> > Could you please describe specific situation?
>
> The simplest example would be:
>
> dd if=/dev/hda of=/dev/null
> echo disk > /sys/power/state
Well, I don't think it's a usual kind of workload. :-)
Anyway, could you please give some details? I mean how exactly your patch
helps in this particular case?
Greetings,
Rafael
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